I'm trying to cut a circle and it's not coming out a smooth circle. I did a search of the forum and it looks like most of the time it's backlash causing the problem. I don't think that's my problem here. I believe it's my motor tuning, I can hear the axis not running smoothly. I'm not really sure where I should have my velocity, acceleration, step pulse and direction pulses set to. I can attach an XML file tomorrow if needed.

If you are cutting the circle with GCode created from a CAD program then there is a good chance that the circumference consists of many straight lines and depending on the resolution it could be quite rough and lead to the problem you describe.Try cutting a circle using the Mach wizard which uses circular interpolation, which is as near to a curve as you are going to get, and see if that improves the situation.

Tweakie.

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